Re: Low testosterone

Some studies have found that men taking testosterone have more cardiovascular problems, like heart attacks, strokes, and deaths from heart disease. Some physicians also have a lingering concern that testosterone therapy could stimulate the growth of prostate cancer cells. Yet the evidence is mixed, with some studies showing a lower cardiac risk with testosterone therapy and no apparent effect on prostate cancer.

Re: Low testosterone

This type of therapy is used in case of hard testosterone imbalance, usually when it's low and can't be treated with other methods. This therapy can be made in many variants, the most popular among them are buccal patch, special gel, patches, subcutaneous pellets and injections. All of them have their own pros and cons and are used according to certain patient's diagnosis. And of course all of them are safe which was proven by many scientists, however the level of their efficience can vary greatly according to the certain type.
In general testosterone therapy results include increasing of muscle mass and losing weight, treating mental health (such disorders as mood swings, depression and anxiety), increasing libido and treating reproductive function, treating chronic inflammation and cardiovascular disease, improving memory, concentration and so on.
Its main pros are only side effects which are for example pounding in ears, skin irritation, sleep issues, weakness, fatigue etc. but they're usually the short-term things and aren't definetely dangerous for your health.